| Haverhill to Opwijk | 178.33 mi (287.00 km) |
| Haverhill to Ostend | 121.56 mi (195.64 km) |
| Haverhill to Oud-Heverlee | 201.29 mi (323.94 km) |
| Haverhill to Oud-Turnhout | 201.55 mi (324.36 km) |
| Haverhill to Oudenaarde | 160.37 mi (258.08 km) |
| Haverhill to Oudenburg | 126.06 mi (202.87 km) |
| Haverhill to Oupeye | 243.44 mi (391.78 km) |
| Haverhill to Overijse | 197.74 mi (318.23 km) |
| Haverhill to Overpelt | 221.49 mi (356.45 km) |
| Haverhill to Paal | 215.59 mi (346.97 km) |
| Haverhill to Peer | 224.82 mi (361.81 km) |
| Haverhill to Pepinster | 254.53 mi (409.63 km) |
| Haverhill to Peruwelz | 173.49 mi (279.20 km) |
| Haverhill to Perwez | 213.86 mi (344.18 km) |
| Haverhill to Philippeville | 220.44 mi (354.76 km) |
